(A note on Ritual Spells. Some spells have the "Ritual" tag meaning that, in addition to casting them normally, you can choose cast them as a ritual. This adds 10 minutes to the casting time, but the spell doesn't use up a spell slot. So it is useful for conserving resources when time is not of the essence.
Snerp may cast any spell he knows that has the ritual tag as a ritual. (Illusory Script)
Grahf may cast any spell in his spell book that has the ritual tag as a ritual, without having to prepare it first. (Detect Magic, Identify)
Eikka may cast any spell she has prepared for the day that has the ritual tag as a ritual. (Identify is currently the only ritual spell prepared, but other ritual spells on her spell list include: Ceremony, Detect Magic, Detect Poison and Disease, Purify Food and Drink)
I'll assume that Grahf has cast identify as a ritual in this case.)
Eikka and Snerp bolster Grahf as he mutters the mystic incantations to identify the weird mirror in the nursemaid's room. And discovers...
...that it is a plain, simple mirror.
Meanwhile, Roberts stands at the top of the cramped, spiral staircase. Chilled air rises up to meet him, sending goosebumps down his arms. It is pitch black and he must light a torch to lead the way. The narrow spiral staircase is made of creaky wood and is contained within a 5-foot-wide shaft of mortared stone that that descends through the house to the basement level. Thick cobwebs fill the shaft and reduce visibility in the staircase to 5 feet.
When he reaches the bottom, he finds himself in a narrow tunnel that stretches southward before branching east and west. The walls and halls here have been carved out of earth, clay and rock. They are 4 feet wide and 7 feet high with timber braces at 5-foot intervals. The floors have a number of ancient footprints laid over each other heading in all directions.
From the moment he arrives in the basement, Roberts can hear an eerie, incessant chant echoing throughout. It's impossible to gauge where the sound is coming from, nor is he able to discern the words.
Basement (new):